Connecting Smartphone to Smartphone via Wi-Fi: A Complete Guide with Instructions

Transfer data between smartphones via Wi-Fi Wireless is one of the fastest and most convenient ways to share files, share internet, or even remotely control a device. Unlike Bluetooth or a cable connection, a wireless network allows you to transfer gigabytes of data in minutes without losing quality. But how do you properly set up such a connection if both devices are smartphones? After all, traditional router-based setups don't work here.

In this article we will look at 5 working methods connecting two smartphones via Wi-Fi: from a standard access point to advanced protocols like Wi-Fi Direct And FTP serversYou will find out which method is suitable for Android-Android, iPhone-iPhone or cross-platform pairs, how to bypass manufacturer restrictions (for example, It's impossible to create an FTP server on iOS without jailbreaking.) and which settings affect transfer speed. We also tested the actual speed of each method—the data is in the table below.

Important: All instructions are relevant for modern versions of operating systems (Android 12–14 And iOS 15–17), but the interface may differ on customized firmware (for example, MIUI, One UI or ColorOS). If your device is older than 2018, some features (eg. Nearby Share) may be absent.

1. Access point: sharing Wi-Fi from one smartphone to another

The most versatile way to connect is to turn one smartphone into access point (hotspot), and connect the second one to it as to a regular router. This method works on all devices, including iPhone And Android, and allows you to not only transfer files, but also distribute mobile Internet.

Advantages:

• 🔄 Cross-platform: suitable for any combination Android-iOS, Android-Android, iOS-iOS.
• 📶 Stable connection: the speed is limited only by the capabilities of the smartphone's Wi-Fi module (up to 300–500 Mbps on modern models).
• 🔒 Security: protocols supported WPA2/WPA3.

Flaws:

• 🔋 Increased battery consumption on the host device (up to 10–15% per hour with active data transfer).
• 📱 iOS restrictions: on iPhone You cannot change the network name (SSID) or the default password.

Turn on mobile data (if you need internet)|Open Settings → Network & Internet → Hotspot & Tethering|Activate Wi-Fi hotspot|Set a network name and password (minimum 8 characters)|Connect the second smartphone to the created network-->

Instructions for Android:

1. Open Settings → Network & Internet → Hotspot & Tethering (on Samsung: Connections → Mobile Hotspot & Tethering).

2. Tap on Wi-Fi hotspot and turn it on.

3. Configure the settings:

   • Network Name (SSID): any, but without Cyrillic.
   • Password: minimum 8 characters (we recommend using WPA2-PSK).
   • Range: 5 GHz (if supported) for greater speed.

On the second smartphone, connect to the created network via Settings → Wi-Fi.

Instructions for iPhone:

1. Go to Settings → Tethering.

2. Turn on Allow others.

3. The network password can be seen in the same menu (it cannot be changed).

4. On the second device, select the network named iPhone [your name].

⚠️ Attention: Some mobile operator plans block hotspot data sharing or charge a separate fee. Check the terms in your operator's personal account.

2. Wi-Fi Direct: Direct connection without a router

Wi-Fi Direct — is a technology that allows devices to connect directly to each other, without the need for a router. It is built into most modern smartphones and provides speeds of up to 250 Mbps (in practice - 50–100 Mbps due to protocol limitations).

The main difference from an access point is that both devices are equal, and one of them does not waste battery power distributing the network. However iPhone does not support Wi-Fi Direct in the classical form - instead of this is used AirDrop (more about him below).

How to enable Wi-Fi Direct on Android:

1. Open Settings → Connections → Wi-Fi (or Settings → Network & Internet → Wi-Fi).

2. Tap on the three dots (menu) and select Wi-Fi Direct (on Xiaomi: More → Wi-Fi Direct).

3. Activate the device search and select the second smartphone from the list.

4. Confirm the connection on both devices.

How is Wi-Fi Direct different from Bluetooth?

Wi-Fi Direct operates at 2.4/5 GHz and delivers speeds of up to 250 Mbps, while Bluetooth (even 5.0) is limited to 2–3 Mbps. However, Wi-Fi Direct consumes more power and has a shorter range (up to 10 meters versus 30–50 meters for Bluetooth under ideal conditions).

Restrictions:

• 🚫 Doesn't work between Android And iPhone.
• 🔄 On some firmware (for example, MIUI) after connecting, you need to manually start file transfer via Conductor or Gallery.
• 📡 Range - up to 10 meters (walls and obstacles reduce it to 3–5 meters).

3. FTP server: transfer files over a local network

If you need to transfer a large number of files (for example, a backup or photo archive), the best way is to run FTP server on one smartphone and connect to it from the second one via any FTP client (for example, FileZilla or ES File Explorer). This method only works within the same Wi-Fi network (for example, if both devices are connected to the same router or one is distributing the Internet via a hotspot).

Advantages of FTP:

• 📁 Support for folders and bulk transfer (unlike Bluetooth or Nearby Share).
• 🔗 Ability to resume interrupted downloads.
• 🛠️ Flexible settings (port, logins, access rights).

Cons:

• 🔒 No encryption by default (data is transmitted in cleartext).
• 📱 On iPhone It is impossible to run an FTP server without jailbreak (only via cloud services).

Instructions for Android:

1. Install a server application, for example, FX File Explorer or Solid Explorer.

2. Start the FTP server in the application settings (usually in the section Net or Remote access).

3. Remember the server address (for example, ftp://192.168.43.1:2221) and login details.

4. On the second device, connect to this address using an FTP client.

⚠️ Attention: By default, FTP transmits logins and passwords in cleartext. If you are connected to a public network, use SFTP (SSH) or FTPS (FTP over SSL) for encryption.

4. Nearby Share (Android) and AirDrop (iPhone): Fast transfer from the manufacturer

Companies Google And Apple developed our own protocols for exchanging files between devices within the same ecosystem: Nearby Share (Android) and AirDrop (iOS/macOS) These technologies use a combination of Wi-Fi Direct, Bluetooth And Ultrasonic (ultrasound) to establish a connection and then transmit data via Wi-Fi.

Comparison of Nearby Share and AirDrop:

How to use Nearby Share:

1. Turn on Nearby Share in the settings (Google → Devices and Sharing → Nearby Share).

2. Select file in Gallery or Conductor, tap Send and select Nearby Share.

3. On the second device, accept the file in the notification.

How to use AirDrop:

1. Open Control center (swipe down from the top right corner) and hold the block with AirDrop.

2. Select mode For everyone or For contacts only.

3. Select the file and tap Share and select the recipient device.

5. Local network: file sharing via a router

If both smartphones are connected to the same router, you can organize file exchange via local networkThis method is convenient for regularly synchronizing data (for example, between home devices). To do this, you will need:

• 📡 Router with support SMB (file sharing protocol).
• 📱 File manager app with support LAN (For example, FX File Explorer or X-plore).

How to set up sharing:

1. On one of the smartphones, create a folder and make it shared through the file manager (section Network → Local Access).

2. Remember the IP address of the device (can be seen in the Wi-Fi settings).

3. On the second smartphone, in the same file manager, select Connect to the server and enter the IP of the first device.

Advantages of the method:

• 🔄 No need to reconfigure the connection every time.
• 📂 Support for large files (limited only by free space on the device).

Flaws:

• 🔌 A router is required (does not work in point-to-point mode).
• 🛡️ Low security level: data is transmitted without encryption.

⚠️ Attention: If your router uses IPv6, some file managers may not see devices on the local network. In this case, force enable IPv4 in the router settings.

Comparison of speed and compatibility of methods

We tested all the described methods on smartphones. Samsung Galaxy S23 (Android 14) and iPhone 14 Pro (iOS 17) File transfer results of size 1 GB:

Conclusion: For maximum speed between Android devices optimal FTP via access point, and for iPhone — AirDropIf compatibility is important, use access point or cloud services (for example, Google Drive).

FAQ: Frequently Asked Questions

Is it possible to connect iPhone to Android via Wi-Fi Direct?

No, iPhone does not support Wi-Fi Direct in its classic form. Use instead access point (Wi-Fi distribution from one device) or cloud services.

Why is Wi-Fi transmission speed lower than cable?

Wi-Fi connections are subject to interference (walls, other devices, channel congestion). The theoretical maximum for Wi-Fi 5 — 866 Mbps, but in practice it is achieved 300–500 Mbps (near 50–60 MB/s). Cable USB 3.0 provides up to 5 Gbps (600 MB/s).

How to transfer files between smartphones without internet?

Use:

• Wi-Fi Direct (Android only).
• Access point + FTP/HTTP server.
• Nearby Share (Android) or AirDrop (iOS).
• Bluetooth (slow, but works everywhere).

Is it possible to play via Wi-Fi between two smartphones?

Yes, if the game supports it local multiplayer via Wi-FiTo do this:

1. Create a hotspot on one device.
2. Connect the second smartphone to this network.
3. Launch the game and select the mode Local area network.

Popular games with this support: Minecraft, Brawl Stars, Asphalt 9.

Why can't my smartphone see another smartphone in Wi-Fi Direct?

The problem may be:

• Disconnected Wi-Fi Direct in the settings.
• Different Wi-Fi standards (for example, one device only supports 2.4 GHz, and the other one is 5 GHz).
• Too far away (maximum - 10 meters).
• Power saving mode (disables background Wi-Fi activity).

Solution: Restart both devices and check your Wi-Fi settings.